Choi Ji Woo's on-screen son Kim Min Jae is a rapper in real life! Kim and MAMAMOO member Solar have joined forces to release the single "Star" for the Twenty Again OST part 6. The new song, which was released today at 12:00 p.m. KST, is a mid-tempo hip hop track that compares unreachable love to a star. Solar's young and sweet vocals perfectly mixed with the 18-year-old actor's unique rapping style. The lyrics were written by Kim Min Jae, and they express his character's feelings for his on-screen girlfriend (played by A Pink's Na Eun). 

Kim debuted his rapping skills on MNET's Show Me the Money 4. The winner from the program, Basick, even coached and gave him solid advice on his rapping delivery during the recording of "Star." 

The hit tvN series Twenty Again airs every Friday and Saturday on DramaFever. Don't forget to watch this weekend to see if you can catch the song "Star" playing in the background. 

Catch up on the latest episode of Twenty Again:

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